Temperature measurement in a single patterned gold nanorod cluster using laser-induced fluorescence

The ability of photon to thermal conversion on wet chemically synthesized gold nanorods (GNRs) is a unique advantage to explore specific local heating. In this study, we demonstrate the thermal response of a single patterned GNR cluster in aqueous solution under near infrared irradiation. To improve the properties of GNRs, such as solubility, we describe the initiated chemical vapor deposition method by the interaction of poly(2-hydroxyethyl methacrylate). A laser-induced fluorescence technique was utilized as a potential and non-intrusive way to measure the temperature field in and around the highly localized GNR cluster. The correlation between fluorescence intensities and temperature was investigated with two dyes by controlling the near infrared laser intensities to heat up the GNRs. Using this technique, we observed highly localized temperature rise in the GNR cluster and heat transfer to the surrounding medium during the laser irradiation.